Foetus m



glint ten gram item: @ffirr.

PORTUS M. HINMAYN, OF ROCHESTER, NEW YORK.

Letters Patent No. 70,437, dated November 5, 1867.

IMPROVED MODE 0F PREVENTING TIN-WARE FROM RUSTING.

TO ALLYWHOM IT MAY CONCERN:

Be it known that I, PORIUS HINMAN, of, Rochester, in the county of Monroe, and State of New York, have inventeda new and improved Method or Process for Preventing Tin-Ware from Busting; and I do hereby declare thatt'he following is a full and clear description of the same, suilicient to enable others skilled in the art to whichimy invention appcrtains to fully understand the same. i

The nature of my invention consists in providing tin-ware, such as wash bzisins, buckets, wash-boilers, teakettics, and water-clippers, with zinc bottoms, by means of which a galvanic action is created which efl'ectually prevents the rusting of the aforementioned tin-ware.

Sheet iron has been, and is now, commonly washed with zinc in a melted state, which produces what is called galvanized iron, and for which it is claimed that-it cannot rust. Common practice has shown the fallacy of this supposition, for any article made of galvanized iron will, sooner or later, rust. .Zinc and tin have been melted and sheet iron washed with the composition to prevent theiron trom rusting, :but in this case the .tin will melt easily, and the iron being between the fluid and the'comp'osition, no chemical action'takes place.

By my method the tin and zinc both are in constant contact with the water or other fluid in the article of tin-ware, and a constant electro-chemical action takes'place, by means of which rust is entirely prevented. And if the article be properly put togethenor rather soldered together, this action will be efiective as long as the article itself holds out, for the chemical connection will be always effected by the water or'fluid contained in the vessel. In case the zinc does not withstand the action of the fire in articles like tea-kettles, 860., I propose to make the bottom of tin as well as the body, but connect the two by a strip of zinc of any suitable width, by means of which the electro-chemical action is produced. Besides increasing the dnrabilityof articles of tinware, my invention tends also to make them more ornamental. Nothing looks more uncleanornntidy than a rusty n'atcr-dipper-in'a bucket, from which the drinking water is filled into the pitcher, or a'rnsty tea kettle, wash-basin, 860. By my invention all these articles are kept bright and shining, merely rubbing them bit with a cloth sufiicing, whilst the constant scouring with sand, 860., ofirusty tin-ware never gives it a bright shine, but wears it away very fast.

I am aware that theprinciple of protecting difiercnt metals from decomposition and rusting bymeans of galvanic action is very old, and this I do not claim but what I do claim as my invention, and desire to secure by Letters Patent, is- I The herein-described method of'protecting common articles oftin-warc from rusting, by providing them with a-zin'c bottom or rim, substantially in-the manner set forth. i v

- PORTUS M. HINMAN.

Witnesses:

. ALEX. A. O. Kmncxn,

D. OURAND. 

